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Water-retaining agent of soil prepared from feather meal and method for preparation thereof

A technology of soil water retaining agent and feather powder, applied in the direction of soil conditioning materials, chemical instruments and methods, applications, etc., can solve the problems of difficult degradation, high price, secondary pollution of soil, etc., to prevent soil erosion and good environmental benefits , the effect of obvious economic benefits

Inactive Publication Date: 2005-09-21
ZHONGKAI UNIV OF AGRI & ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these water-absorbing and water-retaining agents have excellent water-absorbing properties, and the quality of absorbing deionized water can reach hundreds of times that of the water-absorbing agent itself, they are expensive and not easy to degrade, and will inevitably bring secondary pollution to the soil after a large amount of use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Preparation of modified hydrolyzed feather protein

[0035] Weigh 1000 grams of feather powder, soak it for 24 hours with 2000 grams of 1.5% sodium sulfite solution at a temperature of 45°C, and filter; add 4,500 grams of 3.5% sodium hydroxide solution to the filter residue and hydrolyze it at 90°C for 1.5 hours Obtain the hydrolyzed feather protein solution, filter; keep the filtrate temperature at 75°C, add 21 grams of 10% peracetic acid solution, stir and react for 30 minutes, and obtain a modified hydrolyzed feather protein solution with a mass percentage of about 17%.

[0036]2. Preparation of feather protein-based soil water-retaining agent: Add 215 grams of the above-mentioned hydrolyzed feather protein solution, 165 grams of acrylamide, 215 grams of deionized water, and 0.16 and 1.55 grams of 25.0% glutaraldehyde, fully stirred until completely dissolved; then added 21.0 grams of 1.0% sodium bisulfite, 29.3 grams of 1.0% ammonium persulfate, stirred evenly an...

Embodiment 2

[0038] 1. Preparation of modified hydrolyzed feather protein

[0039] Weigh 1000 grams of feather powder, soak it for 24 hours with 2000 grams of 1.5% sodium sulfite solution at a temperature of 45°C, and filter; add 3,500 grams of 5% sodium hydroxide solution to the filter residue and hydrolyze it at 90°C for 2.0 hours Obtain the hydrolyzed feather protein solution, filter; keep the filtrate temperature at 75°C, add 25 grams of 10% peracetic acid solution, stir and react for 30 minutes, and obtain a modified hydrolyzed feather protein solution with a mass percentage of about 22%.

[0040] 2. Preparation of feather protein-based soil water-retaining agent: Add 156 grams of the above-mentioned hydrolyzed feather protein solution, 142 grams of acrylamide, 198 grams of deionized water, and 0.22 grams of N, N'-methylenebisacrylamide into a container with stirring and 1.50 grams of 25.0% glutaraldehyde, fully stirred until completely dissolved; then added 18.0 grams of 1.0% sodium ...

Embodiment 3

[0042] 1. Preparation of modified hydrolyzed feather protein

[0043] Weigh 1000 grams of feather powder, soak it for 24 hours with 2000 grams of 2% sodium sulfite solution at a temperature of 30°C, and filter; add 5,000 grams of 2% sodium hydroxide solution to the filter residue and hydrolyze it at 85°C for 1.0 hour Obtain the hydrolyzed feather protein solution, filter; keep the filtrate temperature at 80°C, add 10 grams of 10% peracetic acid solution, stir and react for 20 minutes, and obtain a modified hydrolyzed feather protein solution with a mass percentage of about 12%.

[0044] 2. Preparation of feather protein-based soil water-retaining agent: Add 125 grams of the above-mentioned hydrolyzed feather protein solution, 200 grams of acrylamide, 180 grams of deionized water, and 0.12 gram and 1.30 grams of 25.0% glutaraldehyde, fully stirred until completely dissolved; then added 28.0 grams of 1.0% sodium bisulfite, 19 grams of 1.0% ammonium persulfate, stirred evenly and...

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Abstract

The invention provides a method of preparing soil water-loss reducer with feather powder. The invention is characterized in that feather powder is made of the waste feather of chicken, duck and other poultries. Make the feather powder steeped in the sodium sulfite solution of normal temperature for 24 hours and filtering. Under 80~90 Deg. C, hydrolyse the filter residue in 2%~5% natrium hydroxydatum solution and get the water soluble protein which molecular weight is 5000~10000. Implement the hydrophilicity modification with peroxyacids and get the modifying hydrolysis feather protein solution. And mix the feather protein solution with acrylamide vinyl polymer solution, process cross bonding, graft copolymerization under the action of redox initiating agent and get the water-absorbing gel. The said soil water-loss reducer is finished after granulating, drying and disintegrating.

Description

technical field [0001] The invention relates to a method for preparing a biodegradable soil water-retaining agent by modifying and grafting natural waste polymers, which belongs to the field of biofunctional polymer materials. Background technique [0002] In arid and semi-arid areas such as Northwest my country, whether it is planting crops or afforestation, there will be an irrigation problem. Due to the limited water holding capacity of the soil, water from rainfall or irrigation is easily lost through soil infiltration. Therefore, on the one hand, plants often face water shortage, and on the other hand, the utilization efficiency of the moisture brought to the soil by rainfall or irrigation water is very low, resulting in quite serious waste. If a material can be used to fully absorb and retain the water brought by irrigation or rainfall, and then release the water when the soil is dry, the water use efficiency can be improved, while the frequency of irrigation can be r...

Claims

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Application Information

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IPC IPC(8): C08H1/06C09K17/32
Inventor 崔英德尹国强廖列文黎新明贾振宇梁世强
Owner ZHONGKAI UNIV OF AGRI & ENG
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